Catastrophic Rupture Induced Damage Coalescence in Heterogeneous Brittle Media

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	Catastrophic Rupture Induced Damage Coalescence in Heterogeneous Brittle Media
	Rong F(荣峰); Wang HY(汪海英); Xia MF(夏蒙棼); Ke FJ(柯孚久); Bai YL(白以龙)
刊名	Pure and Applied Geophysics
	2006
通讯作者邮箱	rongf@hotmail.com
ISSN号	0033-4553
通讯作者	Rong, F (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
中文摘要	In heterogeneous brittle media, the evolution of damage is strongly influenced by the multiscale coupling effect. To better understand this effect, we perform a detailed investigation of the damage evolution, with particular attention focused on the catastrophe transition. We use an adaptive multiscale finite-element model (MFEM) to simulate the damage evolution and the catastrophic failure of heterogeneous brittle media. Both plane stress and plane strain cases are investigated for a heterogeneous medium whose initial shear strength follows the Weibull distribution. Damage is induced through the application of the Coulomb failure criterion to each element, and the element mesh is refined where the failure criterion is met. We found that as damage accumulates, there is a stronger and stronger nonlinear increase in stress and the stress redistribution distance. The coupling of the dynamic stress redistribution and the heterogeneity at different scales result in an inverse cascade of damage cluster size, which represents rapid coalescence of damage at the catastrophe transition.
学科主题	力学
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	EVOLUTION-INDUCED CATASTROPHE ; CRITICAL SENSITIVITY ; MODEL ; SIMULATION ; STRENGTH ; BUNDLES ; ELEMENT ; SYSTEMS ; ROCK
收录类别	SCI
语种	英语
WOS记录号	WOS:000241455500008
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16737]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Rong F,Wang HY,Xia MF,et al. Catastrophic Rupture Induced Damage Coalescence in Heterogeneous Brittle Media[J]. Pure and Applied Geophysics,2006.
APA	荣峰,汪海英,夏蒙棼,柯孚久,&白以龙.(2006).Catastrophic Rupture Induced Damage Coalescence in Heterogeneous Brittle Media.Pure and Applied Geophysics.
MLA	荣峰,et al."Catastrophic Rupture Induced Damage Coalescence in Heterogeneous Brittle Media".Pure and Applied Geophysics (2006).